EP 1770424 A1 20070404 - Compact imaging lens having three single lenses

Title (en)

Compact imaging lens having three single lenses

Title (de)

Kompaktes Objektiv mit drei Einzellinsen

Title (fr)

Objectif compact ayant trois lentilles simples

Publication

EP 1770424 A1 20070404 (EN)

Application

EP 06020413 A 20060928

Priority

JP 2005284712 A 20050929

Abstract (en)

A single focus lens is provided and includes: in order from an object side of the single focus lens, a first lens having positive power and having a convex surface on the object side; a second lens of a negative meniscus lens and having a concave surface of the object side on its paraxial axis; and a third lens of an aspherical lens having a convex surface on the object side on its paraxial axis. The single focus lens satisfies conditions specified in the specification.

IPC 8 full level

G02B 13/00 (2006.01); G02B 9/12 (2006.01); G02B 11/08 (2006.01); G02B 13/18 (2006.01)

CPC (source: EP KR US)

G02B 9/12 (2013.01 - KR); G02B 9/14 (2013.01 - KR); G02B 9/16 (2013.01 - EP US); G02B 13/0035 (2013.01 - EP US); G02B 13/18 (2013.01 - EP KR US)

Citation (search report)

[XY] EP 1562061 A1 20050810 - NAGANO OPTICS LAB CORP [JP]
[YA] US 2005041306 A1 20050224 - MATSUO EIKI [JP]
[A] US 2005094292 A1 20050505 - CAHALL SCOTT C [US], et al
[A] US 2004190162 A1 20040930 - SATO KENICHI [JP]

Citation (examination)

JP 2005345919 A 20051215 - SEIKO PRECISION KK
"Modern Optical Engineering - 3rd Edition", 1 January 2000, MCGRAW-HILL, NEW YORK, article WARREN J SMITH: "Modern Optical Engineering - 3rd Edition", pages: 61 - 90, XP055041402

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR MK YU

DOCDB simple family (publication)

EP 1770424 A1 20070404; CN 1940626 A 20070404; CN 1940626 B 20120829; JP 2007094113 A 20070412; JP 4804856 B2 20111102; KR 100773812 B1 20071106; KR 20070036698 A 20070403; TW 200717022 A 20070501; TW I309728 B 20090511; US 2007070526 A1 20070329; US 7408725 B2 20080805

DOCDB simple family (application)

EP 06020413 A 20060928; CN 200610154375 A 20060926; JP 2005284712 A 20050929; KR 20060094632 A 20060928; TW 95135916 A 20060928; US 52844606 A 20060928